甲、乙两种物质分别依赖简单扩散和易化扩散进入细胞，如果以人工合成的无蛋白磷脂双分子膜

One of the most famous scientists to study adaptations(适应能力) was Charles Darwin(达尔文). He was born in England in 1809. He wasn’t the best student in his school, but when he was 16, his father sent him to a medical school. Charles liked spending time outdoors observing(观察) nature more than having medical classes. He dropped out without graduating.

Next, Charles’ father sent him to school to become a minister(牧师). This time he made it to graduation, but he didn’t want to do the work of a minister. His friends encouraged him to follow his interest in science.

Luckily, Charles was invited to sail on the Beagle as an unpaid scientist after graduation. The Beagle was to travel to South America and then around the world. Their task was to make maps of the places they visited.

On December 27th, 1831. Charles Darwin sailed from England on the Beagle. The trip was planned to last two years. In fact, it lasted five. During this time, he saw many amazing things. He collected lots of plants and animals and took them back to England to begin his scientific study.

Twenty-three years later, Darwin published a scientific paper with another man named Wallace. Darwin described how some animals have adaptations that help them survive. They are passed on to offspring(后代). Darwin’s ideas about adaptations are still very important to the study of living things.

小题1:Darwin was very interested in ____________.

A．having medical classes

B．the work of a minister

C．sailing around the world

D．science and nature小题2:The trip on the Beagle lasted ____________ years.

A．five

B．four

C．three

D．two小题3:When Darwin published the scientific paper, he was ____________ years old.

A．twenty

B．twenty-three

C．forty-five

D．fifty小题4:The underlined word “they” in the last paragraph refers to ____________.

A．adaptations

B．Darwin and Wallace

C．animals

D．Darwin’s ideas

取苹果树的叶两片（A、B），将A片上表面、B片下表面分别涂以凡士林，再分别有细线栓住叶柄吊在室内．几天后发现A叶片萎缩，B叶片基本保持原状态．这实验说明：（　　）

①角质层可以蒸发水分②角质层不透水蒸气③水分经气孔散出④气孔主要分布一下表皮．

A．仅①③

B．①②③

C．①③④

D．②③④

根据《灵枢·五色》的分法，整个面部称为"蔽"的部分是（）

A.颊侧

B.眉间

C.额

D.鼻

E.耳门

蓄电池故障如何处理？

在英国，投资基金被称为（）。

A.共同基金

B.互助基金

C.单位信托基金

D.证券投资信托基金